I can verify, with a fresh install of Steam Skyrim Special Edition, the only option that works is the "Add Gold" option. I activate the trainer from the main menu (and also tried activating it after alt+tabbing to trainer), and press num pad 8 from within game after loading save. I hear "Activated" and still no weight increase, and same with all other options except "Add Gold".
Could you please report an update request so we have 3 reports filled and this game gets onto the list.
Even the script extender makers can't get SKSE to work with Gamepass and it looks as if they don't want to even try, so the modding community if they get this platform version is cut down to one third of the MODS other platform owners have access to. Gamepass seemed like a good deal to me but then I learned what could NOT be done with games on it and it made my decision to skip it all that more easy. It's fine if you just play games normally but modding and cheating have mild to severe limitations on it.
So do you think its going to be a game by game guessing game with Gamepass? The Evil within trainer works perfectly when i tried it.
What i find slightly odd is taking money to make the trainer then admitting it cant be made, would you think a refund is in order for the points?